Examples of org.apache.hadoop.nfs.nfs3.Nfs3Base$Unregister

org.apache.hadoop.nfs.nfs3.request.SYMLINK3Request
Nfs server. Supports NFS v3 using {@link RpcProgram}. Currently Mountd program is also started inside this class. Only TCP server is supported and UDP is not supported.

    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    PATHCONF3Request request = null;
    try {
      request = new PATHCONF3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid PATHCONF request");
      return new PATHCONF3Response(Nfs3Status.NFS3ERR_INVAL);
    }


    FileHandle handle = request.getHandle();
    Nfs3FileAttributes attrs;


    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS PATHCONF fileId: " + handle.getFileId());
    }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    READ3Request request = null;


    try {
      request = new READ3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid READ request");
      return new READ3Response(Nfs3Status.NFS3ERR_INVAL);
    }


    long offset = request.getOffset();
    int count = request.getCount();


    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS READ fileId: " + handle.getFileId() + " offset: " + offset
          + " count: " + count);
    }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    READDIR3Request request = null;
    try {
      request = new READDIR3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid READDIR request");
      return new READDIR3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    FileHandle handle = request.getHandle();
    long cookie = request.getCookie();
    if (cookie < 0) {
      LOG.error("Invalid READDIR request, with negitve cookie:" + cookie);
      return new READDIR3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    long count = request.getCount();
    if (count <= 0) {
      LOG.info("Nonpositive count in invalid READDIR request:" + count);
      return new READDIR3Response(Nfs3Status.NFS3_OK);
    }
    
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS READDIR fileId: " + handle.getFileId() + " cookie: "
          + cookie + " count: " + count);
    }


    HdfsFileStatus dirStatus = null;
    DirectoryListing dlisting = null;
    Nfs3FileAttributes postOpAttr = null;
    long dotdotFileId = 0;
    try {
      String dirFileIdPath = Nfs3Utils.getFileIdPath(handle);
      dirStatus = dfsClient.getFileInfo(dirFileIdPath);
      if (dirStatus == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        return new READDIR3Response(Nfs3Status.NFS3ERR_STALE);
      }
      if (!dirStatus.isDir()) {
        LOG.error("Can't readdir for regular file, fileId:"
            + handle.getFileId());
        return new READDIR3Response(Nfs3Status.NFS3ERR_NOTDIR);
      }
      long cookieVerf = request.getCookieVerf();
      if ((cookieVerf != 0) && (cookieVerf != dirStatus.getModificationTime())) {
        LOG.error("CookierVerf mismatch. request cookierVerf:" + cookieVerf
            + " dir cookieVerf:" + dirStatus.getModificationTime());
        return new READDIR3Response(Nfs3Status.NFS3ERR_BAD_COOKIE);
      }

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    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_SERVERFAULT);
    }
    
    READDIRPLUS3Request request = null;
    try {
      request = new READDIRPLUS3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid READDIRPLUS request");
      return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_INVAL);
    }


    FileHandle handle = request.getHandle();
    long cookie = request.getCookie();
    if (cookie < 0) {
      LOG.error("Invalid READDIRPLUS request, with negitve cookie:" + cookie);
      return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    long dirCount = request.getDirCount();
    if (dirCount <= 0) {
      LOG.info("Nonpositive dircount in invalid READDIRPLUS request:" + dirCount);
      return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    int maxCount = request.getMaxCount();
    if (maxCount <= 0) {
      LOG.info("Nonpositive maxcount in invalid READDIRPLUS request:" + maxCount);
      return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS READDIRPLUS fileId: " + handle.getFileId() + " cookie: "
          + cookie + " dirCount: " + dirCount + " maxCount: " + maxCount);
    }


    HdfsFileStatus dirStatus;
    DirectoryListing dlisting = null;
    Nfs3FileAttributes postOpDirAttr = null;
    long dotdotFileId = 0;
    try {
      String dirFileIdPath = Nfs3Utils.getFileIdPath(handle);
      dirStatus = dfsClient.getFileInfo(dirFileIdPath);
      if (dirStatus == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_STALE);
      }
      if (!dirStatus.isDir()) {
        LOG.error("Can't readdirplus for regular file, fileId:"
            + handle.getFileId());
        return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_NOTDIR);
      }
      long cookieVerf = request.getCookieVerf();
      if ((cookieVerf != 0) && (cookieVerf != dirStatus.getModificationTime())) {
        LOG.error("CookierVerf mismatch. request cookierVerf:" + cookieVerf
            + " dir cookieVerf:" + dirStatus.getModificationTime());
        return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_BAD_COOKIE);
      }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }


    READLINK3Request request = null;


    try {
      request = new READLINK3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid READLINK request");
      return new READLINK3Response(Nfs3Status.NFS3ERR_INVAL);
    }


    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS READLINK fileId: " + handle.getFileId());
    }


    String fileIdPath = Nfs3Utils.getFileIdPath(handle);

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    REMOVE3Request request = null;
    try {
      request = new REMOVE3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid REMOVE request");
      return new REMOVE3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS REMOVE dir fileId: " + dirHandle.getFileId()
          + " fileName: " + fileName);
    }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    RENAME3Request request = null;
    try {
      request = new RENAME3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid RENAME request");
      return new RENAME3Response(Nfs3Status.NFS3ERR_INVAL);
    }


    FileHandle fromHandle = request.getFromDirHandle();
    String fromName = request.getFromName();
    FileHandle toHandle = request.getToDirHandle();
    String toName = request.getToName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS RENAME from: " + fromHandle.getFileId() + "/" + fromName
          + " to: " + toHandle.getFileId() + "/" + toName);
    }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    RMDIR3Request request = null;
    try {
      request = new RMDIR3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid RMDIR request");
      return new RMDIR3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();


    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS RMDIR dir fileId: " + dirHandle.getFileId()
          + " fileName: " + fileName);
    }

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
    
    SETATTR3Request request = null;
    try {
      request = new SETATTR3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid SETATTR request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }


    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS SETATTR fileId: " + handle.getFileId());
    }


    if (request.getAttr().getUpdateFields().contains(SetAttrField.SIZE)) {
      LOG.error("Setting file size is not supported when setattr, fileId: "
          + handle.getFileId());
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }


    String fileIdPath = Nfs3Utils.getFileIdPath(handle);
    Nfs3FileAttributes preOpAttr = null;
    try {
      preOpAttr = Nfs3Utils.getFileAttr(dfsClient, fileIdPath, iug);
      if (preOpAttr == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        response.setStatus(Nfs3Status.NFS3ERR_STALE);
        return response;
      }
      WccAttr preOpWcc = Nfs3Utils.getWccAttr(preOpAttr);
      if (request.isCheck()) {
        if (!preOpAttr.getCtime().equals(request.getCtime())) {
          WccData wccData = new WccData(preOpWcc, preOpAttr);
          return new SETATTR3Response(Nfs3Status.NFS3ERR_NOT_SYNC, wccData);
        }
      }
      
      // check the write access privilege
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new SETATTR3Response(Nfs3Status.NFS3ERR_ACCES, new WccData(
            preOpWcc, preOpAttr));
      }


      setattrInternal(dfsClient, fileIdPath, request.getAttr(), true);
      Nfs3FileAttributes postOpAttr = Nfs3Utils.getFileAttr(dfsClient,
          fileIdPath, iug);
      WccData wccData = new WccData(preOpWcc, postOpAttr);
      return new SETATTR3Response(Nfs3Status.NFS3_OK, wccData);
    } catch (IOException e) {

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    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }


    SYMLINK3Request request = null;
    try {
      request = new SYMLINK3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid SYMLINK request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }


    FileHandle dirHandle = request.getHandle();
    String name = request.getName();
    String symData = request.getSymData();
    String linkDirIdPath = Nfs3Utils.getFileIdPath(dirHandle);
    // Don't do any name check to source path, just leave it to HDFS
    String linkIdPath = linkDirIdPath + "/" + name;
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS SYMLINK, target: " + symData + " link: " + linkIdPath);

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Related Classes of org.apache.hadoop.nfs.nfs3.Nfs3Base$Unregister

org.apache.hadoop.conf.Configuration

org.apache.hadoop.hdfs.nfs.mount.RpcProgramMountd

org.apache.hadoop.hdfs.nfs.nfs3.Nfs3Utils

org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx

org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtxCache

org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3

org.apache.hadoop.hdfs.nfs.nfs3.TestClientAccessPrivilege

org.apache.hadoop.hdfs.nfs.nfs3.TestNfs3Utils

org.apache.hadoop.hdfs.nfs.nfs3.TestOpenFileCtxCache

org.apache.hadoop.hdfs.nfs.nfs3.TestReaddir

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